# Hydra vs Water Reminder

The clearest difference is in-app purchases: Hydra at none against Water Reminder's 2. Hydra also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Water Reminder sells 2 in-app purchases, starting at $0.99 per month. Hydra asks for nothing beyond the download.

## The numbers

| Metric | Hydra | Water Reminder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 10 days |
| Size | 23 MB | 44 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Obadah Almheidat](https://appshunter.io/developer/6783860344) | [TUGBA GOKCEK](https://appshunter.io/developer/6786047130) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra/id6783860342)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Water Reminder

[App page](https://appshunter.io/ios/app/water-reminder-smart-tracker/id6789913186)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sipling Pro | $0.99 | per month |
| Sipling Pro Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is Hydra free?

Hydra is free to download, with no in-app purchases.

### Is Water Reminder free?

Water Reminder is free to download, with in-app purchases available.

### Do Hydra or Water Reminder have ads?

Water Reminder shows ads; Hydra does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*